defunkt/mustache — pull request #137 by tomafro (2012-06-23 11:03:09+00:00)
Title: Avoid raising ContextMiss when testing for key presence.

Raising ContextMiss can be expensive. The error message includes `@stack.inspect`, which depending on the size and content of the stack can be very costly to generate. Defaulting to false for has_key? context misses retains the same behaviour without incurring this cost penalty.